package com.itheima.mapper;

import com.itheima.pojo.Dept;
import org.apache.ibatis.annotations.*;

import java.util.List;

@Mapper
public interface DeptMapper {
    /**
     * 查询所有部门数据
     */
    // 方式一：手动结果映射
//    @Results({
//        @Result(column = "update_time", property = "updateTime"),
//        @Result(column = "create_time", property = "createTime")
//    })

    //方式二：起别名
//    @Select("select id, name, create_time creatTime, update_time updateTime from dept order by update_time desc")
    //方式三：在.yml文件中开启驼峰命名规则
    @Select("select id, name, create_time, update_time from dept order by update_time desc")
    List<Dept> findAll();

    @Delete("delete from dept where id=#{id}")
    void delete(Integer id);

    @Insert("insert into dept(name, create_time, update_time) values (#{name},#{createTime},#{updateTime})")
    void insert(Dept dept);

    @Select("select id, name, create_time, update_time from dept where id=#{id}")
    Dept getById(Integer id);

    @Update("update dept set name=#{name},update_time=#{updateTime} where id=#{id}")
    void update(Dept dept);
}
